Acoustic Rendering With Spatial Pressure Field Replication
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Solution Overview
Problem
Conventional audio systems fail to replicate the acoustic pressure distribution of virtual or phantom sources within a listening space, such as in video conferences, leading to a lack of spatial audio fidelity.
Innovation Solution
An audio system that determines speaker and receiver arrangements within a listening space, classifies the presentation based on receiver-to-speaker ratios, and uses presentation solver instructions to control speaker operations, replicating the acoustic pressure distribution of virtual sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional audio systems are used to provide audio from multiple remote sources, then the audio can be transmitted independently, but the acoustic pressure distribution and spatial audio fidelity are not replicated
Solution Approach 1:
The system changes the parameters of audio delivery by transitioning from independent audio transmission to acoustic pressure distribution replication. The audio system calculates and reproduces specific acoustic pressure values at multiple spatial locations within the listening space, transforming the audio from abstract sound waves to physically accurate acoustic field reproduction that mimics real-world sound distribution.
Solution Approach 2:
The invention adds spatial dimensionality to audio delivery by replicating acoustic pressure distribution across multiple three-dimensional positions in the listening space. Instead of delivering audio through traditional monoaural or stereaural channels, the system creates a spatially distributed acoustic field that reproduces the three-dimensional sound distribution of virtual sources at their respective locations.
2Reliability
If audio is provided independently without spatial replication, then the system is simpler to implement, but the spatial audio fidelity and immersive experience are reduced
Solution Approach 1:
The system creates virtual copies of acoustic pressure distributions at multiple spatial positions corresponding to the locations of virtual or phantom audio sources. By calculating and reproducing the acoustic pressure field characteristics at each virtual source location, the system generates immersive spatial audio that faithfully replicates the acoustic environment of the original audio scene.
Solution Approach 2:
The audio system performs multiple functions simultaneously: it processes audio from multiple remote sources, calculates acoustic pressure distributions for each source at multiple spatial positions, and reproduces the complete acoustic field through the listening space. This multi-functional approach achieves high spatial audio fidelity while managing system complexity through integrated processing.
3Measurement precision
If acoustic pressure distribution is replicated for virtual sources, then spatial audio fidelity is improved, but the computational requirements and processing complexity increase
Solution Approach 1:
The system performs preliminary calculations of acoustic pressure distributions before actual audio reproduction. By pre-calculating the acoustic field characteristics for virtual sources at their respective positions and storing or preparing these distributions, the system reduces real-time processing requirements during audio delivery, improving overall processing efficiency while maintaining measurement precision.
Solution Approach 2:
The system replaces complex real-time acoustic field calculations with optimized computational methods that efficiently determine acoustic pressure distributions. By using mathematical models and pre-computed data structures, the system achieves accurate acoustic pressure replication without requiring proportionally complex real-time processing, balancing measurement precision with processing efficiency.
Data Source
AI summary
Audio of a presentation is provided within a listening space that replicates the spatial distribution of the acoustic pressure generated by the virtual or phantom source within the listening space. Speaker arrangement data indicating an arrangement of one or more speakers within the listening space is received and receiver data for receivers located within the listening space at a time corresponding to a presentation being provided within the listening space is determined. Presentation data corresponding to the presentation being provided within the listening space is determined based at least in part on the speaker arrangement data and the receiver data. One or more parameters of the one or more speakers within the listening space are adjusted based on the presentation data to enable provision of audio associated with the presentation within the listening space.